426255-86-9Relevant academic research and scientific papers
Synthesis of pyrroloquinolines as indole analogues of flavonols
Black, David StC.,Kumar, Naresh,Mitchell, Peter S. R.
, p. 2464 - 2473 (2007/10/03)
7-Acetyl-4,6-dimethoxy-3-phenylindole 10 was converted into a range of 7-indolyl chalcones 13 by reaction with aryl aldehydes under basic conditions. Oxidation of the chalcones 13 with alkaline hydrogen peroxide gave the isolable epoxides 14, which were cyclized with further base treatment into the indole flavonols, or 5-hydroxy-6-oxopyrroloquinolines 15. The related compounds 25 and 26, examples of indole flavanones and flavones, respectively, were also synthesized. UV spectroscopic comparisons between flavonoids and indole flavonoids are discussed.
